Statewide Rankings

Statewide Data Info
Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Iowa

Precipitation Rankings, October 1917

View Period (Months):
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
October 1917
1-Month
1.34"
(34.04mm)
2.29"
(58.17mm)
-0.95"
(-24.13mm)
29th Driest
Driest since:
1952
100th Wettest
Wettest since:
2009
Sep–Oct 1917
2-Month
4.21"
(106.93mm)
5.96"
(151.38mm)
-1.75"
(-44.45mm)
30th Driest
Driest since:
1952
99th Wettest
Wettest since:
1941
Aug–Oct 1917
3-Month
6.57"
(166.88mm)
9.80"
(248.92mm)
-3.23"
(-82.04mm)
16th Driest
Driest since:
1953
113th Wettest
Wettest since:
2018
Ties: 1948
Jul–Oct 1917
4-Month
8.93"
(226.82mm)
13.66"
(346.96mm)
-4.73"
(-120.14mm)
10th Driest
Driest since:
1953, 1976
119th Wettest
Wettest since:
1993
Jun–Oct 1917
5-Month
15.50"
(393.70mm)
18.29"
(464.57mm)
-2.79"
(-70.87mm)
31st Driest
Driest since:
1976
98th Wettest
Wettest since:
1993
Ties: 1936
May–Oct 1917
6-Month
19.41"
(493.01mm)
22.33"
(567.18mm)
-2.92"
(-74.17mm)
32nd Driest
Driest since:
1976
97th Wettest
Wettest since:
1993
Apr–Oct 1917
7-Month
23.80"
(604.52mm)
25.28"
(642.11mm)
-1.48"
(-37.59mm)
47th Driest
Driest since:
1988
82nd Wettest
Wettest since:
1993
Mar–Oct 1917
8-Month
25.58"
(649.73mm)
27.23"
(691.64mm)
-1.65"
(-41.91mm)
47th Driest
Driest since:
1988
82nd Wettest
Wettest since:
1993
Feb–Oct 1917
9-Month
25.95"
(659.13mm)
28.25"
(717.55mm)
-2.30"
(-58.42mm)
39th Driest
Driest since:
1988
90th Wettest
Wettest since:
1993
Ties: 1931
Jan–Oct 1917
10-Month
26.80"
(680.72mm)
29.23"
(742.44mm)
-2.43"
(-61.72mm)
39th Driest
Driest since:
1988
90th Wettest
Wettest since:
1993
Dec 1916–Oct 1917
11-Month
27.82"
(706.63mm)
30.33"
(770.38mm)
-2.51"
(-63.75mm)
37th Driest
Driest since:
1988
91st Wettest
Wettest since:
1993
Nov 1916–Oct 1917
12-Month
29.36"
(745.74mm)
32.07"
(814.58mm)
-2.71"
(-68.84mm)
38th Driest
Driest since:
1956
90th Wettest
Wettest since:
1993
May 1916–Oct 1917
18-Month
48.24"
(1,225.30mm)
54.47"
(1,383.54mm)
-6.23"
(-158.24mm)
19th Driest
Driest since:
1956
109th Wettest
Wettest since:
2019
Nov 1915–Oct 1917
24-Month
57.86"
(1,469.64mm)
64.23"
(1,631.44mm)
-6.37"
(-161.80mm)
21st Driest
Driest since:
1956
106th Wettest
Wettest since:
1993
Nov 1914–Oct 1917
36-Month
95.79"
(2,433.07mm)
96.34"
(2,447.04mm)
-0.55"
(-13.97mm)
56th Driest
Driest since:
1957
70th Wettest
Wettest since:
2010
Nov 1913–Oct 1917
48-Month
128.07"
(3,252.98mm)
128.36"
(3,260.34mm)
-0.29"
(-7.36mm)
57th Driest
Driest since:
1958
68th Wettest
Wettest since:
2010
Nov 1912–Oct 1917
60-Month
157.69"
(4,005.33mm)
160.34"
(4,072.64mm)
-2.65"
(-67.31mm)
45th Driest
Driest since:
1956
79th Wettest
Wettest since:
2010

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